By -
If it fits in your carry on bag you can take it - must be deflated/partially deflated. All fares except Ultra basic you are allowed a carry on bag (overhead bin) and a personal item (fits under the seat in front of you)
If you’re on an ultra basic ticket no, but if you’re on any other ticket yes you can take a basketball + a backpack, but that’s it.
If it fits in your carry on bag you can take it - must be deflated/partially deflated. All fares except Ultra basic you are allowed a carry on bag (overhead bin) and a personal item (fits under the seat in front of you)
If you’re on an ultra basic ticket no, but if you’re on any other ticket yes you can take a basketball + a backpack, but that’s it.